[tluyben2]

They did not infect machines; they just popped up that it found all kinds of things that were not there at all and you should upgrade to fix the issue. That is also a rancid tactic but I think Norton (or Mcafee?) also did it (it has been a long time but I remember either or both of them trying to panic users into buying like that). After upgrading, it would scan and nothing would be found; or at least not what it said before upgrading.